Liquid dispensing apparatus



Dec. 17, 1946. (5. J. HARMAN 7 LIQUID DI SPENS ING APPARATUS .Filed June 26, 1945 2 Sheets-Sheet l rI 5mm 67 65W 5W" BY I la K1 WJM.

- 9 (.68 I V ATTORNEY.

Dec. 17, 1946. G. J. HARMAN 2,412,577

LIQUID DISPENSING APPARATUS I Filed June 26, 194s 2 Sheets-Sheet 2 vention.

Patented Dec. 17,1946

LIQUID DISPENSING APPARATUS Gerald J. Harman, Beverly Hills, Calif., assignor to Harman Equipment Company, a corporation of. California Application June 26, 1943', Serial No. 492,435

2 Claims.

My invention relates to apparatus for loading and transporting barrels and dispensing liquid therefrom, of the character embodied in my co.- pending application, Serial Number 453,055, filed July 31, 1942, wherein a liquid dispensing apparatus is mounted on a vehicle and provided with a suction manifold having inlet spouts for receiving outlet nozzle of. liquid containing barrels, the spouts and nozzle operating when the barrels are moved to a. carrying position on the vehicle, to connect the barrels to the suction manifold so that liquid may be withdrawn from the barrels by a pump connected to the suction manifold, and dispensed. through hoses connected with the. pump.

It is a purpose of'my present invention to provide a liquid dispensing apparatus which is characterized by the provision of valves for controlling the withdrawal of liquid from the barrels and the passage of the liquid into the suction manifold, all in a manner to effect communication between the. barrels and the manifold when the former are in carrying position on the vehicle, so that upon operation of the pump liquid can be withdrawn. from the barrels and into the manifold without leakage of the liquid, and without losing. any of the suction created by the pump between the barrels and the suction manifold.

It is also a purpose of my invention to pro vid'e'in a liquid dispensing apparatus of the above described character, nozzles on the barrels having valves therein, and spouts on the. suction manifold likewise having valves therein, and the valves in the spouts and nozzles being normally closed. to prevent accidental discharge of liquid from the spouts and nozzles, but manually movable to open positions to place the nozzle in communication with the spouts when the former are inserted into the latter.

A further purpose of my invention is the provision in a liquid dispensing apparatus of' the aforesaid character, wherein the. valves of the suction manifold although urged to closed position are adapted to be automatically opened when the nozzles are inserted in. the spouts, and conversely when the nozzles are removed from the spouts the valves automatically close.

I will describe only two forms of liquid dis;-

pensing apparatus, each embodying my invention,

and will then point out the novel features thereof in claims.

Inthe accompanying drawings:

Fig. 1 is a view showing in top plan one form of liquid dispensing apparatus embodying my in- Fig. 2 is an enlarged vertical sectional view taken on. the line. 2:.-2 of'Figrl.

Fig. 3 is a vertical sectional view takenon the line 3-3 of Fig; I.

Fig.4 is: a view showing in side elevation and partly in section, another form of liquid dispensing apparatus embodying my invention.

Referring specifically to the drawings and particularly to that formof my invention. shown inv Figs. 1 to 3, the apparatus is. similar to that embodied in my aforesaid copending application in that it comprises a trailer frame F on the rear end of which are a. pair of supports S and S for a pair of barrels B and B These supports are secured to cradles C and 0 (see broken. lines Fig. 1'), and the cradles are in turn. pivoted on the rear portion A of the frame F. Thus the supports S and S are pivoted to occupy a barrel loading position in which they are inclined. to the vertical to allow the barrels to be placed thereon, and a barrel carrying position in which they and the. barrels are tilted forwardly to the position shownv in Fig. 1-. As also. shown in Fig. 1 shafts T and T are mounted in the frame F- and operatively connected to the supports S and S through the link connections disclosed in my copending application hereinbefore referred to, so that by manual operation of cranks K and K the supports can be individually moved to the two positions above described.

Each barrel B or B is provided at its forward end with a discharge nozzle N connected to the barrel by a length. ofpipe l5, one end of which is threaded into a. lateral. collar l6 formed on the nozzle.v As best shown in Fig. 2, the'nozzle N comprises a tubular body H the outlet or bottom end of which is normally closed by a valve V seated on the lower edge of a sealing gasket G. This gasket embraces the reduced end portion N3 of the nozzle body, and at its upper end abuts an annular shoulder E9; on the body in order to limit movement of the gasket inwardly on: the

nozzle;

The gasket G is preferably formed of compressible rubber and is: generally'of frusto-conical form in section for: a major portion of its length, the lower end of the nozzle being tapered as in.- dicated at 210: to accommodate the tapered. form of the. gasket at that point. The gasket may be formed with an annular flange 2| to facilitate application and removal of the gasketv from. the nozzle, and also-.tolimit movement of the gasket inwardly of a spout.

The valve V is provided with a stem 22' which extends. upwardly through a sleeve 23-, secured 3 axially within the nozzle by a spider 24. The stem 22 extends upwardly through a second sleeve 25, in the upper end of the nozzle body, a sealing ring 26 being carried by the sleeve to produce a fluid-tight seal between the stem and the sleeve. The stem 22 projects from the top of the nozzle body and through a disc 21 secured to the nozzle body top and provided with a pair of ears 28. Within these ears is a pintle 29 on which the hub 30 of a cam 30 is journaled. Rotatably fitted in the upper end of the stem 22 is a ball bearing 22 so as to be interposed between the cam 30 and the stem to reduce friction and wear and facilitate rotation of. the cam by an operating arm 3|. This arm 3| is fixed to the cam at such a point that the cam will remain in either of the two extreme positions to which it is adapted to be rotated as shown by the solid and broken lines in Fig. 3.

An expansible spring 32 surrounds the valve stem 22 at a point between the sleeve 23 and a collar 33, the latter being pinned to the stem. By means of this spring 32 the valve V and valve stem 22 are urged upwardly in the nozzle, the valve abutting the lower edge of the gasket G to close the outlet end of the nozzle, and the upper end of the stem abutting the smallest radius of the cam 38. Thus it will be seen from Fig. 3, that by movement of the arm 3! from the solid line position to the broken line position, the cam will operate to move the stem downwardly against the tension of the spring 32, and thus move the valve V to open position in which it is held by the cam.

As shown in Fig. 1, my liquid dispensing apparatus also includes a hose 34 mounted on a rack 35, supported on a pipe 36, suitably secured to the trailer frame. From this pipe 36 a branch pipe 31 extends to a pump 38 operated by a motor 33. through gears 40. The pump 38 communicates with a suction manifold M through a connection 4|.

The manifold M comprises a. tubular body 42 arranged horizontally and transversely on the trailer frame, with heads 43 on the opposite ends of the body. Each head i preferably of square form and hollow, as best shown in Fig. 2, and its top is formed with a circular opening to accommodate a valve cage K which depends from the top of the head by the provision of an annular flange 44 bolted to the head. The bottom wall 45 of the cage is of convex form, and at its apex it is provided with a guide sleeve 46 in which the lower end of the stem 41 for a valve V is slidably received. The side wall of the valve cage is provided with a series of opening 48, and spanning these openings is a filtering screen 49, suitably secured to the cage so as to filter oil in its passage from the interior of the cage through the openings and into the manifold.

The upper marginal edge of the cage K is counterbored to provide an annular shoulder 50, against which the lower edge of an annular spout 5i bears. This spout is secured in fixed position on the cage by the provision of an annular flange 52, through which the bolts for securing the flange 44 to the manifold extend. The lower edge of the spout 5| is chamfered to form a seat 53 for the valve V and it is against this seat which the valve is urged by a conical spring 54 interposed between the valve and the bottom wall of the valve cage. Thus it will be seen that the valve is normally closed by the spring to prevent the escape of liquid from the manifold as well as to prevent intake of air.

- The inner periphery of the spout 5| is shaped to provide a conical mouth 55 in which the sealing gasket G is adapted to be received and so as to slightly compress the gasket to have a fluidtight seal between the spout and the nozzle.

In the operation of the liquid dispensing apparatus just described, each barrel is brought to the horizontal position shown by swinging the respective support S or S to the position shown in Fig. 1, and in this position of the barrel, the nozzle end is extended in to the spout 5|, the gasket G being interposed between the spout and nozzle to provide the fluid-tight seal before described. The valves V and V being normally closed under the action of their respective springs, once the nozzle is extended into the spout, the valve V may be moved to open position through operation of the cam 30 in the manner previously described. With the opening of this valve it engages the valve V and moves the latter downwardly to open position against the tension of the spring 54. Thus the two valves are now open so that upon operation of the pump 38 suction is produced in the manifold M and, in consequence, in the head 43, to draw oil from the barrel through the nozzle and into the head. From the head the oil passes through the manifold to the pump and from the latter to the hose for dispensing as required.

When liquid is not being dispensed from either barrel the cam for either valve V may be returned to its normal position to allow the springs 32 to return the valve V to closed position, and likewise to permit the springs 54 to return the valve V to closed position. Thus, should the nozzle N for any reason be removed from the spout 5|, liquid cannot accidentally leak from either the nozzle or the spout.

Referring now to Fig. l, I have here shown another form of liquid dispensing apparatus which i similar to the first apparatus herein described in that it embodies a barrel B on a support S, pivoted on the trailer frame F, and a suction manifold M secured to the frame. The barrel at its forward end is provided with a fitting 56 to which is connected a short length of pipe 51, with the latter connected to an elbow fitting 58, and such fittings and pipe constitute a discharge nozzle N for the barrel. The pipe 57 contains a butterfly valve V on a stem 59 rotatable in a head 60 by an arm 6| secured to the stem exterioriy of the head and provided with a set screw 62 by which the arm can be secured against rotation to secure the valve in closed position or in any open position of adjustment.

The outlet end of the nozzle is formed interiorly with a spider 63 including a collar 64 in which a pin 65 is screw-threaded. This pin is provided for the purpose of opening a manifold valve, and may be adjusted in the collar to vary the degree of opening of such valve.

The nozzle carries a sealing gasket G similar in construction to the gasket G, and abutting a shoulder 63 on the nozzle to limit its position of adjustment inwardly on the nozzle.

The suction manifold is provided with a head 61 corresponding to one of the heads 43 of the first form of my invention, and in which head is contained a cage K for a valve V This cage is of the same construction generally as the cage shown in Fig. 2, and is secured within the head in the same manner. The valve V is fixed on the upper end of a stem 68 movable vertically in a sleeve 69 on the bottom wall of the cage K A spring 10 urges the valve to closed position against a seat H formed on the inner end of a spout l2.

This spout is provided with a flange 13 by which it is secured to the cage flange, as shown. The upper end of the spout 72 is interiorly tapered to provide a seat 74 which receives and compresses the gasket G to form a fluid-tight connection between the spout and the nozzle.

When the nozzle N is extended to the spout 12, the pin 65 engages the valve V to move the latter to'open position against the tension of the spring 10, as illustrated in Fig. 4. Thus the nozzle N is placed into communication with the suction manifold head 61 so that by opening the valve V and setting the pump into the operation, liquid will be drawn from the barrel into the manifold for discharge through the hose as described in connection with the first form of my apparatus. Manifestly, when the nozzle is removed from the spout the pin 65 disengages the valve V to allow the spring Ill to return the valve to closed position, and thus the manifold head is sealed against the escape of liquid. Similarly, when the nozzle is removed from the spout the valve V is manual- 1y closed to prevent escape of liquid from the barrel.

Although I have herein shown and described only two forms of liquid dispensing apparatus each embodying my invention, it is to be understood that various changes and modifications may be made therein without departing from the spirit of my invention and the spirit and scope of the appended claims.

I claim:

1. In combination; a barrel; a support for said barrel movable to occupy a loading position and a carrying position; an outlet nozzle on said barrel having a first valve therein normally closed; means for urging said valve to closed position; a suction manifold having an inlet spout formed with a seat to receive said nozzle when said support is moved to barrel carrying position; means for sealing the joint between said nozzle and said spout seat; a second valve in said spout; means for urging said second valve to close said spout; and manually operable means on said nozzle for opening said first valve to a position in which it engages and opens said second valve when said nozzle is extended into said spout, whereby said barrel is placed in communication with said manifold to permit liquid in said barrel to be drawn into said manifold.

2. In combination; a barrel having an outlet nozzle; a support for said barrel movable to cause said nozzle to occupy an elevated position and a lowered position; a compressible sealing gasket 0n and projecting from the free end of said nozzle; a suction manifold beneath said nozzle having an inlet spout provided with a mouth having a seat in which said gasket is received and compressed when said nozzle is moved to lowered position; a first valve at the free end of said nozzle; means for urging said valve against the projecting end of said gasket to close said nozzle; a second valve engageable with said seat for closing the inner end of said spout; means for urging said second valve to closed position; and means for moving said first valve to and holding it in open position wherein, it engages and opens said second valve against the action of its urging means.

G. J. HARMAN. 

